5. ShotSeeker

Reese protects an NYPD analyst named Ethan Garvin who works with an acoustic surveillance system called "ShotSeeker", designed to detect gunshots anywhere in the city. Samaritan had Ethan's friend Krupa killed because of her research and tries to cover up her murder and the existence of her work, by hacking ShotSeeker to engineer Garvin's death via suicide by cop and having Krupa's classmate and possible owner of her research files killed. Elias' associate and childhood friend, Bruce Moran ( James LeGros ) approaches Fusco to learn who killed Elias. Root meets Jeff Blackwell and tries to open his eyes about the true nature of his new employer.

Fusco has investigated so much about Garvin and Krupa that Samaritan labels him a "potential obstructionist." Root and Finch decide to make Krupa's research public to render Garvin irrelevant to Samaritan. The team reveal to Bruce that Elias is still alive, who encourages Bruce to go back to the shadows and embrace them. Finch and Root engineer a series of simulations in a Faraday cage between a small clone of the Machine and that of Samaritan, but every outcome is in favor of Samaritan with tens of billions of victories.